Telephone system.



Patented 0G13. 27', 1908.

ffy

ffy 3 mmv@ fa; mmmm S ummm;

fwd Sngz PAUL V. SMITH, OvF LYONS, KANSAS.

TELEPHONE SYSTEM.

Specification of Letters Patent.

Patented Oct. 27, 1908.

Application :tiled December 22, 1906. Serial No. 349,134.

To all whom it may concern? Be it known that l, PAUL V. SMITH, a citi-Zen of the United States, residing atLyons, in the county of Rice andState of. Kansas, have invented new and useful Improvements in TelephoneSys tems, of which the following is a specification. The inventi intelephone systems designed primarily for rural telephone service,comprehending speciiically a means whereby the central operator may callone subscriber on a many party line without calling any other phone onthe same line. v

The main object of the present invention is the provision of a dial ateach telephone subscribers station, and controlling the move'- ment otall of said dials from a iiXed dial at the centralstation, each of thesubscribers dials differing in arrangement of contacts from the others,whereby the energization of a call circuit at a particular point in theoperation of the subscribers dials, will energize only that call circuitin which the particular subscribers dial is arranged to present a propercontact.

The invention will be described in the following specication, referencebeing had particularly tothe accompanying drawings, in which Figure 1 isan elevation illustrating the arrangement of the controlling dial andone of the subscribers dials, the contacts of the latter and the wiringtherefor being illustrated, Fig. 2 is an enlarged transverse sectionthrough a portion of the controlling dial, illustrating particularly themeans for securing the respective contacts, Fig. 3 is a dia.- grammaticview showing a series of subscribers7 dials.

Referring particularly to the drawings, wherein similar referencenumerals indicate like parts throughout the several views, my improvedautomatic call system comprises a controllingV dial 1 and a series ofsubscribers dials 2, one of each of thelatter being arranged adjacentthe telephone of each subscriber on a party line. T he disk 1 is iixed,while each of the disks 2 is revolubly supported upon a stud 3, andcarry upon their rear faces toothed wheels 4 with whichan escapement 5is arranged to coperate, the escapement lever (i being projected belowthe pivotal point and shaped to provide an armature 7' for anelectro-magnet 8 iixed beyond the periphery of the disk.

on relates to an improvement f The controlling' dial 1 is formedad'acent its peripheral edge with a series of pus but-l tons 9, one foreach of the subscribers dials. The push button 9 ismounted for movementin 'a recess 10 formed in the controlling disk, said button carrying atits lower end a depending pi/n 11. The annular contact late 12 isarranged in the peri heral edge o' the disk 1, being so positione thatthe recesses 10 are partly formed through said plate l2, so that thepush 4button 9 at all times is in electrical contact withthe plate 12.The bottom of the recess 10 is closed by a second contact plate 13, andbetween said plate and the bottomloi1 the push button 9 is arranged acoil spring 14 designed tonormally support the button 9 to maintain the`pin 11 out of contact with the plate 13. The escapement magnets 8 ofeach of the subscribers dials are connected in series through aconductor 15, vterminally connected to the contact plate' 12, theremaining conductor of a circuit 16 being connected to a ivot in 17secured centrally of the contro ing diial on the up er end oi which ispivotally mounted a meta lic'handle 18 adapted for engagement A with anyone of the push buttons 9.

A catch magnet Y19 is arranged adjacent each of the subscribers dials,being provided with a pivoted armature 20 which, when released from theinliuence of the magnet, is normallydisposed in the ath cfa catch 21secured upon the peripliery of the subscribers disk. The catch ispivotally supported on ears rejecting Jfrom the disk and is provided wita laterally extending lip 2.2

so arranged relative to the plane of the catch proper as to preventmovement of the catch 1n one direction when the latter 'is in a par-.ticular position, so that the armature 20,

'tive series of subscribers dials are'connected in series through aconductor 23, terminally i tact ring 25 of each dial is formed with laprojection 32 designed, when the particular dial connected to thecontact 4plate 13, the coni ductor 24 for completing the circuit being lconnected to the conductor lleading from l the escaping magnets. So fardescribed the subscribers dials are ofidentical construction andarrangement, but as it ,is desired hat said dials perform an individualfunction, a variation in their connection to accompllish such functionmust beirovided. Tot is end each of the subscriber s dials is providedwith a contact ring 25, preferably arranged adjacent the peripheral edgeof the dial and adapted to be electrically engaged by a contact plate orbrush 26 at all times. The brushes -for 'the series o-f subscribersdials are connected in multiple `through a conductor 27, terminallyconnected to the conductor 16 adjacent the controlling dial, the secondconductor 'of this circuit,.as 28, being connected to the conductor 23adjacent its connection With the contact late 13. The conductor 28connects in multip e a plurality of bell magnets 29, one for eachsubscribers dial, said bell magnets forming the energizing or bellsounding magnet for each tele hone call bell. The remaining terminal oft e Winding of each magnet is projected beyond the same, as at 30, andterminates in a contact 31` dis osed directl above or spaced from the suscribers dia The conis properly ositioned to engage the contact 31 ofthe bel magnet Winding and close the circuit through said bell magnet.

Each of the push buttons 9 on the controlling dial corresponds to one ofthe subscribers dials, and with all of said sub scribers dials arrangedin the same relative position, that With the catch 21 in engagement withthe armature of the catch magnet the contact 32 of each dial will occu ya positioncorresponding exactly Withtiliie relative position of the ushbutton of the particular subscribers ial on the fixed controlingvdial.That is to say the contacts 32 of the subscribers dials Will when saiddials are all in normal position be successively spaced a uniformlyincreased distance from the bell magnet contact 31 and from each other,so that no two of the contacts 32 of any two subscribers dials willoccupy the same position relative to the contact 31.

With the parts constructed and arranged as described and assuming thecentral operator desiring to call telephone number 4, he Will initiallydepress any one of the `ush buttons 9 by engaging the handle 18 t ere-With and operating said handle, with the cHect to energize the catchmagnets 19, and thereby release all of the subscribers dials. The handle18 is now moved from the operative or starting point into engagementwith the push buttons up to and including that button corresponding withdial 4. The contact of the handle 13 with the'successive buttons Willoperate the series of escapement magnets 8 and thereby move all of thesubscribers- .dials a distance corresponding to four teeth oi the Wheel4. This movement of the subscribers dial will position the contact 32 ofdial 4 to close the circuit through the contact 3-1 of the bell'magnetof that dial. As the contact 32 of dial 4 is the only contact throughoutthe series of subscribers dials, which under the four 'step-by-stepmove-- ments imparted by the dial will be positioned to engage the.contact 31, it Will be obvious that none of the other contacts 32 Willbe in engagement with the contact 31. Having positioned the dials asdescribed the o eratcr depresses the' handle 18i With the e ect to forcethe particular push button 9 into engagement With the plate 13. Thismovcment closes the circuit through the brush 26 and bell magnets 29,but las the circuit can only be closed through a particular bell magnetengaged by the contact 32 of the dial 4, this magnet alone is energizedand hence the bell of telephone 4 alone is sounded. After calling thearticular telephone the operatoi returns the andle 18 to normalposition, and then moves the latter a complete circle about thelcontrolling disk, engagin each cf the push buttons 9 and operating t ieescapement .magnets 8 of each of the subscribers dials.

This movement of the subscribers dials, therefore, will be continueduntil each of the dials rides into engagement with the armature 20 ofthe catch magnet 19, whenthe dials are precluded from further movementuntil the catch magnets are again energized. The resetting movement justdescribed is essential in repositioning all of the subscribers dials toan identical normal position in order that the next calling operation oithe central operato. may simultaneously and similarl aHect each of thesubscribers dials.

It Wil thus be seen that in the use of the construction described thecentral operator is enabled to call any articular telephone on amultiparty linewithout sounding any of theother telephone on the line`thereby dis ensing with the particular signal call for eac telephone andavoiding the scundinir of telephones on the Aline for which the cail isnot intended.

Having thus described the invention what is claimedas new, is

1. The combination with a plurality of telephones, of a series of dialsarranged' in respective cooperation With said telephones, means forlocking all the respective dials iii normal position, a contact carriedby each dial and adapted to close the bell circuit of the particulartelephone with which the dial coperates, the contacts of each of thedials havin relatively different positions on eachl dial'w ien the dialsaie Within the influence of the locking means, a controlling dialcarrying a iixed contact corresponding to each dial tactv the terminalsof a circuit including the locking means for all telephone dials.

2. The combination With a plurality of telephones, of a series of dialsarranged in respective cooperation with said telephones, means forlocking all the respective dials in normal positions, a telephone bellcircuit closinglcontact carried by each dial, said contacts avindifferent o sitions on the respective dia s When sai dials are Withinthe iniiuence of the locking means, a controlling dial carrying a iixedcontact foreach of the' telephone dials, and a movable contactcorresponding to all ofthe telephone dials, said contacts forming theterminals of the circuitada-pted to impart a step-by-step movement toall of the dials, a second'fixed contact adapted in connection with themovable contact to form the terminals of a circuit and serving whenenergized to release the locking means of all of'the telephone dials,and a lush button normally engaging each of the Pirst mentioned fixedcontacts and adapted to be operated by the movable contact to en'- gagethe second'iixed contact.

3. The combination with a plurality of telephones, of a series of dialsarranged in respective co' eration with said telephones', means forlocing all of the respective dials in normal l'osition and a contactcarried by each dia and arranged to close the bell circuit of theparticular telephone, the contacts of each of' the respective dialshaving a different position on each dial when the dials are in normalposition, anda controlling dial carrying-a fixed contact for each of thedials, and a movable contact corresponding to all of the dials, saidcontacts forming the terminals of a circuit adapted to im art astep-byste movement to. all of the ials, said contro ling dial carryinga second fixed contact adapted for electrical connection with themovablecontact for releasing the locking meas ofall of the dials, saidmovable-contact and second fixed contact forming also the terminals ofthe respective telephone bell clrcuits, l p

4'. The combination With.'- a plurality of normally open call circuits,o a series of'dials each carrying a contact ada ted When in position toclose one of the ca l circuits, means for normally holding all of saiddials in position to maintain their contacts out of callA dial in theenergization of the circuit, an arm mounted on the controlling dial andforming the remaining terminal of the locking circuit and of thecontrolling circuit, and a series of push buttons carried bythecontrolling dialv and adapted to be en aged by the arm, each of saidpush buttons eing normally in electrical engagement with the firstmentioned fixed contact and being adapted for move- .ment by the arm toelectrically engage the second fixed contact.

5. The combination with a plurality of normally open call circuits, of aseries of dials each carrylng a contact ada ted When in position toclose one of the ca circuits, means for normally holdin all of saiddials in osition to maintain thelr contacts out of cal circuit closingposition, a controlling dial carrying a lixed contact forming oneterminal of a circuit including the locking means of all the dials, asecond ixed contact carried by the controlling di'al and forming oneterminal of a dial operating circuit, means arranged in said operatingcircuit adjacent each dial for imparting a step-by-step movement to thedia in the energization of the circuit, an arm mounted on thecontrolling dial and forming the remaining terminal of the lockingcircuit' v yment by the arm to electrically enga e the second fixedcontact, the terminals of t e respective call circuits including themovable" arm and the second fixed contact.

ln testimony whereof, 'I aiiix my slgnature in presence of twoWitnesses.

, PAUL V. SMITH.v

Witnesses:

J. E. SMITH, GEORGE L. WHARTON

